Discharge jet and pile-plank applying the same

ABSTRACT

Disclosed are a discharge jet and a pile-plank applying the same. The discharge jet may include a discharge jet body; the body is connected with a water inlet pipe; the shape of the body is basically the same as the pile-plank; a diameter of the discharge jet is in the range of 50 mm-500 mm; water jet holes are formed in the body; the diameter of each water jet holes is in the range of 1.5 mm-15 mm; each space between adjacent water jet holes is in the range of 8 mm-80 mm; and the maximum included angle formed by the water jet holes is in the range of 30°-180°. The discharge jet and a method for driving the pile-plank into the earth by the discharge jet have the advantages of wide application range, high construction efficiency and low cost.

TECHNICAL FIELD

The present disclosure relates to the technical field of construction ofpile-planks which can be applied to water conservancy projects such asdam engineering, port and waterway engineering, artificial water island,road traffic bridge, water gate, culvert and conveyance canal as well asto reinforced concrete under-earth whole projects, and particularly, toa discharge jet and a pile-plank applying the same.

BACKGROUND

In the related art, various discharge jets which drive the earth byemploying a hydraulic advancement guiding pile generally have thefollowing defects and shortcomings: 1) the structure and shape aresimple and therefore cannot meet the needs of multiple changeablestructure and shape pile-planks; 2) the diameter of the discharge jet,the angle between discharge holes, and the distance between thedischarge holes and the earth cannot meet the requirement of thepile-plank to drive the earth; and 3) the ability of the discharge jetto pass through an underearth obstacle is poor when confronted with anunderearth obstacle, for example, in Chinese Utility Module applicationNo. 200610070402.4, in plank insertion, when there exists the underearthobstacle, a conical pile-plank needs to be prefabricated in advance,thereby overcoming a resistance by means of the conical pile-plank.However, the conical pile-plank has an inconvenience no matter inconstruction or in transportation because the position of the underearthobstacle cannot be foreknown ahead of time, and the conical pile-plankas required also cannot be definitely prefabricated in water conservancyconstruction.

SUMMARY

The present disclosure is intended to overcome the defects of therelated art and provides a discharge jet. First of all, the dischargejet conforms to the shape of a pile-plank. Secondly, parameters of thedischarge jet are set so as to improve the capability of the water jetand increase the penetrating power of the pile-plank. And lastly, whenthere is an obstacle in pile-plank construction, a water jet head may befixed on the bottom of the pile-plank additionally so as to increase thepenetrating power to the obstacle. Technical solutions adopted by thepresent disclosure are as follows: a discharge jet may include adischarge jet body, the body being connected with a water inlet pipe,and the shape of the body is basically the same as a pile-plank; thediameter of the discharge jet is in the range of 50 mm-500 mm; water jetholes are formed in the body; the diameter of each water jet hole is inthe range of 1.5 mm-15 mm; each space between adjacent water jet holesis in the range of 8 mm-80 mm; and the maximum included angle formed bythe water jet holes is in the range of 30°-180°.

Further, according to the technical character of the present disclosure,the area, cut by each of the water jet holes, of the earth is smallerthan 64 cm², and an internal water inlet pressure of the body is in therange of 0.2 MPa-6 MPa.

Further, according to the technical character of the present disclosure,the pile-plank is of an I shape, a T shape, an H shape, a tubular shape,a double cross shape, a cylindrical shape, a square shape or arectangular shape.

Further, according to the technical character of the present disclosure,the discharge jet may further include a water jet head; the water jethead may include a connecting portion fixedly connected to the water jethead, and may further include a water jet branch pipe communicating withthe discharge jet; and the water jet holes are formed in a wholecircumferential direction of the water jet branch pipe.

Further, according to the technical character of the present disclosure,the water jet head is provided with a conical end portion.

Further, according to the technical character of the present disclosure,the shape of the connecting portion is determined by the shape of thedischarge jet body.

Further, according to the technical solution of the present disclosure,a pile-plank is further provided, and an inside of the pile-plank isprovided with a water inlet pipe, and a lower part of the pile-plank isprovided with the above-mentioned discharge jet.

Further, according to the technical character of the present disclosure,the discharge jet may further include a water jet head; the water jethead may include a connecting portion fixedly connected to the water jethead, and may further include a water jet branch pipe communicating withthe discharge jet; and the water jet holes are formed in a wholecircumferential direction of the water jet branch pipe.

The beneficial effects of the present disclosure include but not limitedto: the discharge jet disclosed by the present disclosure overcomes theshortcoming that when there is an underearth obstacle with a relativelylarge resistance in hydraulic plank insertion, a conical pile-plankneeds to be prefabricated ahead of time in the related art. By means ofselection and matching of parameters such as sizes of the water jetholes, hole distances and diameter of the discharge jet, the actingforce of the driving pile-plank is effectively increased. Particularly,by virtue of the water jet head which may be fixedly connected in site,site construction is more convenient, the transportation expenses of aspecial pile prefabricated out of the site are reduced and theconstruction time is saved. With the water jet holes distributedcircumferentially at 360° on the water jet head, the underearth spacecan be expanded to push the obstacle to the earth outside thepile-plank, and the capability of the pile-plank to pass through theearth having the obstacle is greatly strengthened. When there are aspecial earth and a special condition in construction, a hydraulicvibration hammer is further arranged on top of the pile-plank, such thatthe pile driving speed is improved by combining with hydraulic vibrationand hydraulic cutting. Therefore, the discharge jet and a method fordriving the pile-plank into the earth by the discharge jet have theadvantages of wide application range, high construction efficiency andlow cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of a pile-plank of the presentdisclosure.

FIG. 2 is a structural schematic diagram of a water jet head of thepresent disclosure.

FIG. 3 is the schematic diagram of a discharge jet coupled with a Ishape pile-plank.

FIG. 4. is the schematic diagram of a discharge jet coupled with a Tshape pile-plank.

FIG. 5. is the schematic diagram of a discharge jet coupled with a Hshape pile-plank.

FIG. 6. is the schematic diagram of a discharge jet coupled with atubular shape pile-plank.

FIG. 7. is the schematic diagram of a discharge jet coupled with adouble cross shape pile-plank.

FIG. 8. is the schematic diagram of a discharge jet coupled with acylindrical shape pile-plank.

FIG. 9. is the schematic diagram of a discharge jet coupled with asquare or rectangular shape pile-plank.

FIG. 10. is the schematic diagram of a distribution of water jet holes.

FIG. 11 is the schematic diagram of water jet holes on a discharge jet.

Wherein, 1 is a discharge jet, 2 is a water inlet pipe, 3 is apile-plank, 4 is a hoisting ring of the pile-plank, 5 is a hydraulicvibration hammer, 11 is a discharge jet body, 12 are water jet holes, 13is a water jet head, 14 is a connecting portion, 15 is a water jetbranch pipe , and 16 is a conical end portion.

wherein, the water jet holes are omitted from FIGS. 3-9.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure is intended to overcome the defects of therelated art and provides a discharge jet. First of all, the dischargejet conforms to the shape of a pile-plank. Secondly, parameters of thedischarge jet are set so as to improve the capability of the water jetand increase the penetrating power of the pile-plank. And lastly, whenthere is an obstacle in pile-plank construction, a water jet head may befixed on the bottom of the pile-plank additionally so as to increase thepenetrating power to the obstacle.

Technical solutions adopted by the present disclosure are as follows: adischarge jet may include a discharge jet body 11, the body 11 beingconnected with a water inlet pipe 2, and the shape of the body 11 isbasically the same as a pile-plank; the diameter of the body 11 is inthe range of 50 mm-500 mm; water jet holes 12 are formed on the body 11;the diameter of each water jet hole i12 s in the range of 1.5 mm-15 mm;each distance between two adjacent water jet holes is in the range of 8mm-80 mm; and the maximum included angle formed by the water jet holes12, shown as a in FIG. 10, is in the range of 30° -180°.

Further, according to the technical character of the present disclosure,the area, cut by each of the water jet holes 12, of the earth is smallerthan 64 cm², and an internal water inlet pressure of the body is in therange of 0.2 MPa-6 MPa.

Further, according to the technical character of the present disclosure,the pile-plank is of an I shape, a T shape, an H shape, a tubular shape,a double cross shape, a cylindrical shape, a square shape or arectangular shape.

Further, according to the technical character of the present disclosure,the discharge jet 1 may further include a water jet head 13; the waterjet head 13 may include a connecting portion 14 fixedly connected to thedischarge jet 1, and may further include a water jet branch pipe 15communicating with the discharge jet 1; and the water jet holes 12 areformed in a whole circumferential direction of the water jet branch pipe15.

Further, according to the technical character of the present disclosure,the water jet head 13 is provided with a conical end portion 16, and thewater jet holes 12 are formed in a whole circumferential direction ofthe conical end portion 16.

Further, according to the technical character of the present disclosure,the shape of the connecting portion 14 is determined by the shape of thedischarge jet body 11.

Further, according to the technical solution of the present disclosure,a pile-plank is further provided, and an inside of the pile-plank isprovided with a water inlet pipe, and a lower part of the pile-plank isprovided with the above-mentioned discharge jet.

Further, according to the technical character of the present disclosure,the discharge jet may further include a water jet head; the water jethead may include a connecting portion fixedly connected to the water jethead, and may further include a water jet branch pipe communicating withthe discharge jet; and the water jet holes are formed in a wholecircumferential direction of the water jet branch pipe.

The present disclosure further discloses a pile-plank, wherein the waterinlet pipe 2 is provided in said pile-plank, and the discharge jet isprovided thereunderneath. Preferably, the discharge jet consists of thewater jet head 13 which is fixed to the connecting portion of thedischarge jet, and the water jet branch pipe which is connected to thedischarge jet, wherein water jet holes are provided to said water jetbranch pipe.

The present disclosure further discloses a method for driving thepile-plank into the earth, which may include the following steps.

In step 1), the pile-plank is prefabricated, and the discharge jet isarranged at the bottom of the pile-plank.

In step 2), the pile-plank is hoisted by a hoisting device, and aflowing medium is charged to a water inlet pipe, wherein the medium isejected out from the water jet holes, while the pile-plank is going downgradually and drives into the earth, thereby accomplishing plankinsertion.

In step 3), when there is a condition that the earth structure iscomplex and it is difficult to accomplish the plank insertion by virtueof the discharge jet, the pile-plank is hoisted out of water, and thewater jet head is fixed on the discharge jet in site, and the water jetholes on the water jet head jets the water to all sides according to a360° circumferential direction.

To increase the water jet capability, a hydraulic vibration hammer 5 mayfurther be added on top of the pile-plank.

The water jet head and the discharge jet can be connected via a weldingmethod.

Of course, the above description is not intended to limit the presentdisclosure herein. The present disclosure is not merely limited to theabove examples. Any changes, modifications, additions or replacementsmade by those of ordinary skill in the art within the substantial scopeof the present disclosure shall fall within the protection scope of thepresent disclosure.

What is claimed is:
 1. A discharge jet, comprising a discharge jet body,the body being connected with a water inlet pipe, wherein the shape ofthe body is basically the same as a pile-plank; the diameter of thedischarge jet is in the range of 50 mm-500 mm; water jet holes areformed in the body; the diameter of each water jet hole is in the rangeof 1.5 mm-15 mm; each space between adjacent water jet holes is in therange of 8 mm-80 mm; and the maximum included angle formed by the waterjet holes is in the range of 30°-180°.
 2. The discharge jet according toclaim 1, wherein the area, cut by each of the water jet holes, of theearth is smaller than 64 cm², and an internal water inlet pressure ofthe body is in the range of 0.2 MPa-6 MPa.
 3. The discharge jetaccording to claim 1, wherein the pile-plank is of an I shape, a Tshape, an H shape, a tubular shape, a double cross shape, a cylindricalshape, a square shape or a rectangular shape.
 4. The discharge jetaccording to claim 1, wherein the discharge jet further comprises awater jet head; the water jet head comprises a connecting portionfixedly connected to the water jet head, and further comprises a waterjet branch pipe communicating with the discharge jet; and the water jetholes are formed in a whole circumferential direction of the water jetbranch pipe.
 5. The discharge jet according to claim 4, wherein thewater jet head is provided with a conical end portion.
 6. The dischargejet according to claim 4, wherein the shape of the connecting portion isdetermined by the shape of the discharge jet body.
 7. A pile-plank,wherein an inside of the pile-plank is provided with a water inlet pipe,and a lower part of the pile-plan is provided with a discharge jetaccording to claim
 1. 8. The guiding pile-plank according to claim 7,wherein the discharge jet further comprises a water jet head; the waterjet head comprises a connecting portion fixedly connected to the waterjet head, and further comprises a water jet branch pipe communicatingwith the discharge jet; and water jet holes are formed in a wholecircumferential direction of the water jet branch pipe.
 9. A method fordriving a guiding pile-plank into the earth, comprising: 1)prefabricating the pile-plank, and arranging a discharge jet at thebottom of the pile-plank; and 2) hoisting the pile-plank by a hoistingdevice, and injecting flowing medium to a water inlet pipe, wherein themedium will eject out from the water jet holes, and then the pile-plankgoes down gradually to get into the earth, thereby accomplishing plankinsertion; and wherein the discharge jet is the discharge jet accordingto claim
 1. 10. The method according to claim 9, further comprising: 3)when there is a condition that the earth structure is complex and it isdifficult to accomplish the plank insertion by virtue of the dischargejet, hoisting the pile-plank out of the water, and fixing the water jethead and the discharge jet in site; and wherein the water jet headcomprises a connecting portion and a water jet branch pipe, theconnecting portion is fixedly connected to the water jet head, and thewater jet branch pipe is communicated with the discharge jet, and thewater jet holes are formed in a whole circumferential direction of thewater jet branch pipe.
 11. The method according to claim 10, furthercomprising: providing a hydraulic vibrating hammer connection; whereinthe hydraulic vibrating hammer connection is positioned on top of thepile-plank, so as to accelerate a pile driving speed.
 12. The methodaccording to claim 9, further comprising: providing a hydraulicvibrating hammer connection; wherein the hydraulic vibrating hammerconnection is positioned on top of the pile-plank, so as to accelerate apile driving speed.